/* All */
* {
  margin: 0;
  padding: 0;
  border: none;
  font-size: 14px;
  font-family: Arial;
}

a {
  text-decoration: none;
}

ul {
  list-style: none;
}

/* 兼容新增 H5 新增标签，设置为块级元素 */
header,
nav,
section,
aside,
article,
footer {
  display: block;
}

/* header */
header {
  height: 80px;
  background: #000;
}

header > .container {
  width: 1200px;
  margin: 0 auto;
}

header > .container > a {
  display: block;
  float: left;
  margin: 5px 25px;
}

header > .container > nav {
  float: right;
}

header > .container > nav > a {
  display: block;
  float: left;
  font-size: 24px;
  width: 100px;
  height: 73px;
  line-height: 73px;
  text-align: center;
  color: #fff;
}

header > .container > nav a.Home {
  background: #d40122;
}

header > .container > nav a.Course {
  background: #017fcb;
}

header > .container > nav a.Actual {
  background: #78b917;
}

header > .container > nav a.Plan {
  background: #feb800;
}

header > .container > nav a.FAQ {
  background: #f27c01;
}

header > .container > nav a.Notes {
  background: #433b90;
}

header > .container > nav > a:hover,
header > .container > nav > a.active {
  padding-bottom: 7px;
}

/* banner */
.banner {
  background: #eaeaea;
}

.banner > ul {
  position: relative;
  width: 1490px;
  height: 538px;
  margin: 0 auto;
  padding-top: 10px;
}

.banner > ul > li {
  position: absolute;
  width: 610px;
  height: 300px;
  overflow: hidden;
}

.banner > ul > li.active {
  z-index: 2;
  top: 37px;
  right: 0;
  left: 0;
  width: 960px;
  height: 460px;
  margin: auto;
  border: 1px solid #fff;
}

.banner > ul > li.left {
  z-index: 1;
  top: 0;
  bottom: 0;
  left: 0;
  margin: auto;
}

.banner > ul > li.right {
  z-index: 1;
  top: 0;
  right: 0;
  bottom: 0;
  margin: auto;
}

.banner > ul > li > img {
  position: absolute;
  left: -30%;
  height: 100%;
}

/* main */
.main {
  width: 1200px;
  height: 473px;
  margin: 34px auto 0;
}

.main h1 {
  font-size: 30px;
  font-weight: lighter;
  margin-bottom: 23px;
}

.main h1 > samp {
  font-size: 30px;
  color: #7c7c7c;
}

.main > aside {
  float: left;
  width: 450px;
}

.main > aside > dl {
  position: relative;
  display: block;
  height: 74px;
  margin-bottom: 17px;
}

.main > aside > dl > dt {
  position: absolute;
  top: -1px;
  left: 92px;
  font-size: 16px;
  font-weight: bolder;
  line-height: 16px;
}

.main > aside > dl > dd:first-of-type {
  position: absolute;
  left: 0;
}

.main > aside > dl > dd:last-of-type {
  position: absolute;
  top: 20px;
  left: 90px;
}

.main > article {
  float: right;
  width: 720px;
  overflow: hidden;
}

.main > article > p,
.main > article > img {
  margin-bottom: 20px;
}

/* footer */
footer {
  background: #000;
}

footer > .container {
  width: 1200px;
  height: 64px;
  margin: 0 auto;
}

footer > .container > p {
  line-height: 64px;
  float: left;
  color: #fff;
}

footer > .container > span {
  float: right;
  margin: 14px 40px;
}

footer > .container > span > img {
  margin-left: 4px;
  opacity: 0.7;
}

footer > .container > span > img:hover {
  opacity: 1;
  cursor: pointer;
}
